We are convinced that everyone, with the right guidance, a Fit and healthy Life can be led.


Level 6 is the highest professional certification for fitness trainers worldwide. At Level Six, you will train with one of the ~10 trainers in the world at this level.

Registered with EREPS as Master Trainer en Advanced Exercise and Health Specialist — the highest professional titles in the field.
With a bachelor's degree in Fitness, Sport & Health and continuous professional development, the quality of your guidance never stands still.
Many clients come to us with chronic complaints, injuries or after physiotherapy. Where a regular gym stops, we begin.
You train in a quiet, private environment with full 1-to-1 guidance — just you and a trainer who knows exactly what you need.
Not a standard gym, but a private studio where everything revolves around your results. This is what makes us different.

Our head trainer is an EREPS Master Trainer – the highest professional title in the field. With years of experience and thousands of sessions, he knows exactly how to get the best out of you.
Every programme is built from scratch, tailored to your body, goals, and lifestyle. As you grow, your plan grows with you.
Smart variety and creative programming make training something to look forward to – not something to get through.
Our private studio in Delfgauw is centrally located between Delft, Pijnacker, Nootdorp and Rijswijk. Free parking right outside.
Group classes with a maximum of 8 people. Not an anonymous gym experience, but a session where you are seen.
We work exclusively with professional equipment from Kingsbox and Rogue – brands trusted by elite athletes worldwide. Ergonomic flooring and a premium environment for optimal performance.
Whether you're a beginner or have been training for years — at Level Six, you get more than just a place to work out. This is what sets us apart from an ordinary gym.
You train alone, with a standard schedule. An instructor walks around but doesn't know your name – let alone your goals.
Every training session with an experienced personal trainer who monitors your technique, motivates you, and knows you by name.
A one-off schedule that you have to keep yourself. No evaluations, no adjustments — you're on your own.
Fully personalised training plan that is continuously adjusted based on your progress and evaluations.
Busy peaks, waiting for devices, music from another. You are one of many.
Just you (or your small group) and your coach. No crowds, no waiting times, no distractions – pure focus.
Standard machines, used by hundreds of members daily. Wear and tear and hygiene are a constant challenge.
Professional equipment from Kingsbox and Rogue, ergonomic flooring — all chosen for performance and comfort.
You hope it works, but there's no one objectively tracking or evaluating it. Progress feels like guesswork.
Regular evaluations and data-driven adjustments. You always know exactly where you stand and where you're heading.
After a few weeks, it becomes difficult to maintain. Without accountability, discipline wanes.
Your coach celebrates your successes, adapts your plan when life gets in the way, and ensures you keep showing up.
There's no one to check your technique or point out when something isn't right. Injuries are lurking.
Constant technical control and exercises tailored to your body. Training safely as a foundation for results.
You don't have to be an athlete to start at Level Six. Whether you're 18 or 88, we'll adapt everything to your level. All you need is the first step — we'll do the rest.
We are coaches, motivators and partners on your journey. We think along with you, provide guidance and ensure you keep moving towards your goal.

Aleksandar is the founder and head trainer at Level Six. With over 12 years of experience and more than 10,000 individual sessions, he knows exactly how to get the best out of every client – from teenagers to those in their eighties. His passion? The personal connection he builds and the progress he achieves together with his clients.
EREPS Master TrainerEuropeActiveBSc Fitness & HealthACE Nutrition SpecialistNASM Senior FitnessLifestyle coach GLIDTS Squat AnalysisBurnout Coach

Sasja is a passionate and dedicated personal trainer who believes that fitness should be both effective and enjoyable. With a warm, supportive approach and a keen eye for technique, she ensures every workout is safe, motivating, and goal-oriented.
Personal TrainerCertified
Not at all. Each programme is tailored to your current fitness level, whether you're a beginner or already experienced. We focus on steady, sustainable progress that suits you.
Personal training is one-on-one coaching, entirely focused on you. With duo training, two people – friends, family members, or colleagues – can train together in the same session, sharing motivation while still receiving a personalised programme.
Online training is delivered via live video calls and/or a dedicated digital platform. You will receive customised training schedules, training videos, progress tracking and regular check-ins, all accessible from your phone, tablet or computer.
Group classes are small-scale, supportive lessons led by a certified trainer. They combine effective programmes with a motivating group atmosphere. The exercises are adaptable to different fitness levels.
Ja. Als je niet naar de studio kunt komen, kun je gemakkelijk een online sessie inplannen, zodat je geen training mist.
We tailor all training sessions to your needs, taking into account injuries, mobility limitations, and other health risks. Safety is always our top priority.
If you decide to cancel your annual subscription early, any early termination fees as stated in your contract will apply. This ensures a fair price for both the client and trainer, as the subscription is designed to guarantee your commitment and secure your booked training slots. Please refer to your contract for precise terms and conditions.
Yes. I have a Bachelor's degree in Fitness, Sport & Health from the University of Skopje (Macedonia) and am registered with the European Register of Exercise Professionals (EREPS) as an Advanced Exercise and Health Specialist and Master Trainer – the highest achievable level. I am also a member of Europe Active, ensuring my knowledge is up-to-date with the latest industry standards and research.
This is what our customers say on Google
The personal training at Level Six has changed my life. Aleksandar knows exactly how to motivate and challenge you without overworking you.
My wife and I do duo training and it's fantastic. Professional, personal and very effective. We look forward to our session every week.
The group classes are brilliant! Small enough for personal attention, large enough for a great group atmosphere. Every class is different and challenging.
Thanks to the online training, I can continue training with Aleksandar from abroad. It feels like you're in the studio – that's how good the guidance is.
After years at the gym, finally seeing real results. The difference is the trainers' knowledge and commitment. They truly see you as a person, not a number.
I am 65 and feel completely at ease here. The training is perfectly adapted to my capabilities. I never thought exercising could be so enjoyable.